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Codex

Skill alessiomarcone/agent-fieldbook/plugins/knowledge-pack/skills/codex

Selects and designs general Codex setup and operation across the ChatGPT desktop app, CLI, IDE, cloud, AGENTS.md, permissions, MCP, scheduled tasks, and SDK. Use for Codex surface choice, repository setup, or operating workflows; specialist prompt, subagent, skill, and plugin authoring routes to those narrower skills.From its SKILL.md

Install
npx -y skills add alessiomarcone/agent-fieldbook --skill codex

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

  • 5 stars5 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

2.2 KB, 405 tokens by cl100k_base, as published. Nobody here has run it

Codex

Turn an objective into a reviewable Codex task with the right context, authority, and completion checks.

References

  • Always read references/knowledge-base.md for the operating model.
  • Read references/sources.md before making a time-sensitive product claim.
  • For specialist authoring, route to prompt, subagent, skill, or plugin.

Procedure

  1. Resolve the outcome, repository or folder context, surface, risk, and definition of done.
  2. Choose the surface: app for parallel local work and artifact workflows, CLI/IDE for interactive engineering, cloud for configured remote work, scheduled tasks for clock-driven recurring execution, or SDK/non-interactive mode for programmatic execution.
  3. Put durable repository commands, conventions, boundaries, and verification in the nearest applicable AGENTS.md.
  4. Add a focused skill for a repeated workflow and a custom agent only when isolation or a distinct configuration is valuable.
  5. Use the least authority that can complete the task; make external and irreversible actions explicit.
  6. Require relevant tests, review, and a concise final report of changes and remaining uncertainty.
  7. Check current official documentation for commands, fields, models, plans, and feature availability.

Output contract

Return:

  1. Surface and mechanism — one primary choice and why.
  2. Context setup — files, instructions, tools, and permissions.
  3. Ready task — a complete Codex prompt or configuration.
  4. Done when — observable checks.
  5. Reuse — what belongs in AGENTS.md, a skill, custom agent, or plugin.

Boundaries

  • Do not invent current commands, configuration, or availability.
  • Do not absorb prompt, subagent, skill, or plugin authoring when a narrower skill matches.
  • Do not request broader permissions than the task needs.
  • Do not transfer Claude-only configuration into Codex.
  • Answer in the user's language.

What ships with it: 3 files

6.3 KB alongside SKILL.md

agents/

references/

Keep looking

Skills are one crate of 325,949. Ordering is by how many stacks a row turns up in, so the top of any crate is what has actually been picked rather than what has the most stars.